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Experimental determination of thermal performance of glazed facades with water film, under direct solar radiation in the tropics

机译：热带地区直接太阳辐射下水膜玻璃幕墙热性能的实验测定

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摘要

An experimental investigation of a glazed facade oriented west has been conducted utilizing the Sustainable Glazed Water Film (SGWF). The experiments involved the following three parameters namely: the water flow rate, the type of glazing, and the solar radiation intensity. Two full-scale rooms were used, one as a reference room, with a fixed configuration, and the other as a test room, which could be configured in different ways. The ability of the SGWF to reduce the passage of the solar energy during the sunny hours and hence to limit the heat passage through glazing was analyzed. The aim of this paper is to examine the improvement in thermal performance obtained by the flowing water film over glazed facades. It has been found that the flowing water film on the glazed facade lowers the glazing surface temperature by 7.2-14 ℃ (average) and absorbs a portion of the solar energy resulting in decreasing indoor temperature by 2.2-4.1 ℃ (average). However, with increased solar radiation intensity, the SGWF provides a better level of efficiency in reducing the heat transfer indoors.
机译：利用可持续釉面水膜（SGWF）对面向西方的玻璃幕墙进行了实验研究。实验涉及以下三个参数：水流量，玻璃类型和太阳辐射强度。使用了两个全尺寸的房间，一个是固定配置的参考房间，另一个是可以以不同方式配置的测试房间。分析了SGWF在阳光明媚的时间内减少太阳能通过从而限制热量通过玻璃的能力。本文的目的是研究在玻璃幕墙上流动的水膜对热性能的改善。已经发现，在玻璃幕墙上流动的水膜使玻璃表面温度降低了7.2-14℃（平均），吸收了一部分太阳能，导致室内温度降低了2.2-4.1℃（平均）。但是，随着太阳辐射强度的增加，SGWF在减少室内传热方面提供了更高水平的效率。

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  • 来源
    《Building and Environment》 |2011年第11期|p.2238-2246|共9页
  • 作者

    Abdultawab Qahtan; Nila Keumala; S.P. Rao; Zulkiflee Abdul-Samad;

  • 作者单位

    Department of Architecture, Faculty of Built Environment, University of Malaya, 50603 Kuala Lumpur, Malaysia;

    Department of Architecture, Faculty of Built Environment, University of Malaya, 50603 Kuala Lumpur, Malaysia;

    Department of Architecture, Faculty of Built Environment, University of Malaya, 50603 Kuala Lumpur, Malaysia;

    Department of Quantity Surveying, Faculty of Built Environment, University of Malaya, Malaysia;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    glazed facade; water film; heat transfer; sustainability;

    机译：玻璃幕墙;水膜;传热;可持续性;

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